灵鹊做题网新GRE 指南中的一道：
来源：学生作业帮 编辑：灵鹊做题网作业帮 分类：英语作业 时间：2024/06/06 19:43:35
新GRE 指南中的一道：
多选多：
1.Each employee of a certain company is in either Department X or Department Y,and there are more than twice as many employees in Department X as in Department Y.The average (arithmetic mean) salary is $25,000 for the employees in Department X and is $35,000 for the employees in Department Y.Which of the following amounts could be the average salary for all of the employees in the company?
Indicate all such amounts.
$26,000
$28,000
$29,000
$30,000
$31,000
$32,000
$34,000
Answer:A and B
我做出来范围是27500~28300只有B选项.A是怎么出来的啊!
多选多：
1.Each employee of a certain company is in either Department X or Department Y,and there are more than twice as many employees in Department X as in Department Y.The average (arithmetic mean) salary is $25,000 for the employees in Department X and is $35,000 for the employees in Department Y.Which of the following amounts could be the average salary for all of the employees in the company?
Indicate all such amounts.
$26,000
$28,000
$29,000
$30,000
$31,000
$32,000
$34,000
Answer:A and B
我做出来范围是27500~28300只有B选项.A是怎么出来的啊!
范围是25000到28300
只要departmentA的人任意多平均数就可以任意接近25000
只要departmentA的人任意多平均数就可以任意接近25000